PEN
Penumbra, Inc. · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -7.1% ·
share flow -18.9% ·
net new positions -7.7%
— formula
Broad distribution — falling shares and fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q3 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 116 | -12 | 22.38M | $7.07B | +3 | −14 |
| Q1 2026 | 130 | +2 | 22.22M | $7.29B | +14 | −13 |
| Q4 2025 | 129 | +2 | 30.57M | $9.51B | +3 | — |
| Q3 2025 | 22 | -2 | 23.38M | $5.92B | — | −3 |
| Q2 2025 | 22 | +3 | 20.19M | $5.18B | +3 | — |
| Q1 2025 | 16 | 0 | 6.15M | $1.64B | +1 | −1 |
| Q4 2024 | 16 | +2 | 5.72M | $1.36B | +2 | — |
| Q3 2024 | 13 | -1 | 4.72M | $917.01M | — | −1 |
| Q2 2024 | 14 | — | 5.82M | $1.05B | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | T. Rowe Price ✦ | 1.99M | -34.4% | $385.76M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 2 | T. Rowe Price ✦ | 1.99M | -34.4% | $385.76M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 3 | Geode Capital Management ✦ (passive) | 655.57K | +1.8% | $127.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 655.57K | +1.8% | $127.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 5 | Baillie Gifford ✦ | 591.85K | -3.7% | $115.00M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 6 | Baillie Gifford ✦ | 591.85K | -3.7% | $115.00M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 7 | Baillie Gifford ✦ | 591.85K | -3.7% | $115.00M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 8 | Baillie Gifford ✦ | 591.85K | -3.7% | $115.00M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 9 | Capital World Investors ✦ | 544.01K | -0.2% | $105.71M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 10 | Citadel Advisors ✦ | 412.02K | +497.0% | $80.06M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 11 | Citadel Advisors ✦ | 412.02K | +497.0% | $80.06M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 12 | Norges Bank ✦ (passive) | 247.62K | -28.2% | $48.11M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 133.29K | -25.3% | $25.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | AQR Capital Management ✦ | 133.29K | -25.3% | $25.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 15 | AQR Capital Management ✦ | 133.29K | -25.3% | $25.66M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 16 | Renaissance Technologies ✦ | 90.00K | -9.7% | $17.49M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 17 | PRIMECAP Management ✦ | 39.28K | -1.6% | $7.63M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 18 | D. E. Shaw & Co. ✦ | 8.62K | +0.6% | $1.67M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 19 | Bridgewater Associates ✦ | 5.79K | -70.2% | $1.12M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 20 | Millennium Management ✦ | 5.25K | -95.0% | $1.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 21 | Marshall Wace ✦ | 1.82K | -98.3% | $354,033 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 22 | Marshall Wace ✦ | 1.82K | -98.3% | $354,033 | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Gotham Asset Management | $3.08M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 479 holders, 33.44M shares, $10.70B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.